Spray-nozzle for humidifiers.



' s. w. GRAMBR & w. B. HODGB.

SPRAY NOZZLE FOR HUMIDIFIBES. j

APPLICATION rum) ulme, 1912.

Patented June 4, 1912.

wi t/WWO Original application filed October 26, 1910, Serial No. 589,199. Divided and this application filed January- ITED STATES PATENT OFFICE.

Specification of Letters Patent.

STUART W. CB AMER AND WILLIAM B. HODGE, 0F CHARLOTTE, NORTH CAROLINA; SAID HODGE ASSIGNOR TO SAID CRAMER. v

SPRAY-NOZZLE FOR HUMIDIFIERS.-

Patented June 4, 1912.

26, 1912. Serial No. 673,674.

To all whom it may concern:

Be. it known that we, STUART W. CRAMER and WILLIA B. Honor, citizens of the United States, residing at Charlotte, in the county of Mecklenburg and State of North- Carolina, have invented certain new and useful Improvements in Spray-Nozzles for Humidifiers; and I do hereby declare the following to be afull, clear, and exact-description of the invention, such as will enable others skilled in the art, to which it appe-rtains. to make and use'the same.

The present application for a patent is a division of our application #589,199, filed October 26th, 1910. 1

Our invention relates primarily to humidifiers for moistening the air in mills, factories and other buildings and has especial reference to water spraynozzles..

The particular form of spray-nozzle to which our invention refers, and to which it is applicable, is that consisting of a bodymember arranged for,attachi ngto a supply p'ipe, a jet discharge orifice eitherincorporated directly into thebody part or into a detachable member adjustably secured thereto, and a pillar u pon which is supported a jet breaking up pln, opposite to a'nd concentrically arranged with reference to thedis charge orifice. v

The object of the invention is to secure great accuracy in centering the'orifice in line with its breaking up pin, as well as in; creasing the durability of the device, and the invention consists in certain improvements, which will be fully disclosedin the following specification and claims.

In the accompanying drawings, which form part of this specification :Fig'.1re 1 represents a sectional view of nozzle with the completed nozzle ready for use.

Reference being had to the drawings and the designating characters thereon, the numeral 1 indicates the nozzle-frame or yoke,

' cast of suitable metal as part of the body 6.

point opposite the pin.

pin and bushing as they appear, in the casting, and Fig. 2 1s a like view of a,

pipe, not shown, for conveying water to be thepin 4, Fig. 2, opposite the opening oror'ifice 7' .by mere mechanical methods.

Owingto the fact that the accurate centering of this pin exactly opposite and in alinement with the orifice almost solely deter-t mines the efficiency of the nozzle, that is, the ability to dividethe'water used inextremely fine spray, numerous methods have been used to get this centering perfect. In- .asmuch as the diameter of the pin 4 is usually slightly greater than that of the orifice 7 through the bushing or nipple 3, the proper and permanent mechanical centerin of the pin with the orifice is extremely di ficult. If these are cast in, the inability to' hold the pin 4, Fig. 2,.perfectly rigid during the contraction of the metal renders it likely to sprlngone way or the other, and

when the castingis finally cool it is not -axial withthe nozzle orifice.

In prevlous types of nozzles, the orifices have been in the mctalof the casting itself. In other Words, a hole drilled through the casting to form the orifice at the proper An objectionable feature of this construction is that the water passing through at high velocity wire draws the sides of the orifice, this is on account of the fact that the metal used incasting is not 1 uniformly hard and homogeneous. To

overcome this grooving action, and to-aid in centering the' pin, we have arranged the bushing 3, Fig. 1 of less erosive material than the body, in connection with the pin 4 to be held each by the other in their respective positions, and the metal of the nozzle body cast around them While they are thus held rigidly. The bushing and the pin beare permanently embedded therein. It is advisable to have the pin 4 as shown in Fig.

" come homogeneous with the body and both 2 slightly larger in diameter than the orifice of the bushing 3. On this account the pin 4 is madewith two diameters, the smaller diameter exactly the same as the inside diameter of the orifice in the bushing, whereas the larger diameter of the pin 4 is of the proper size to break up the stream of Water to the best advantage.

The bushing or nipple 3 is slipped on the smaller end of the pin 4 with a tight fit, as shown in Fig. 1, which holds it axially central with the pin. The casting is then made and finally the end of the pin which extends from the lower end of the bushing is filed off, leaving the proper space between the lower end of the bushing and the upper end of the pin to get thedesired water breaking effect. Owing to the fact that the pin and the bushing have been held axially while the molten metal was poured around them and allowed tocool, it can be readily seen that these two parts are exactly'in line With each other, and after'filing off the end of the pin and removing the part in the orifice, the stream of water issuing from the orifice of the bushing 3 will strike the upper end of the pin 4 exactly central and result in a uniform spray of water surrounding pin 4.

It is, 0 course possible to use pins and bushings of any desired material so as to resist corrosion and wear and of any desired ratio between the diameter of the orifice and the diameter of the pin.

Having thus fully described our invention, what we claim is- 1. A spray nozzle comprising a body and a frame and having a discharge orifice whose walls are of material different from the body and integrally united therewith, and a pin integrally united to the body in alinement with said orifice and forming the breaking surface of the nozzle.

2. A spray nozzle comprising a body and a frame and having a discharge orifice whose walls are of less erosive material than the body and integrally united therewith, and a pin integrally united to the body in alinement with said orifice and forming the breaking surface of the nozzle.

3. A spray nozzle comprising a body and a frame and having a discharge orifice whose walls are of material different from the body and integrally united therewith, and a pin of greater diameter than said orifice, integrally united to the body in alinement with the orifice and forming the breaking surface of the nozzle. 

